ASTM A369 Grade FPB vs. SAE-AISI 50B46 Steel
Both ASTM A369 grade FPB and SAE-AISI 50B46 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is ASTM A369 grade FPB and the bottom bar is SAE-AISI 50B46 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 140 | |
160 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 19 | |
21 |
Fatigue Strength, MPa | 180 | |
220 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 73 | |
72 |
Shear Strength, MPa | 290 | |
340 |
Tensile Strength: Ultimate (UTS), MPa | 470 | |
540 |
Tensile Strength: Yield (Proof), MPa | 270 | |
310 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
250 |
Maximum Temperature: Mechanical, °C | 400 | |
410 |
Melting Completion (Liquidus), °C | 1460 | |
1460 |
Melting Onset (Solidus), °C | 1420 | |
1420 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 52 | |
47 |
Thermal Expansion, µm/m-K | 12 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
7.1 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
8.2 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 1.8 | |
1.9 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 1.4 | |
1.4 |
Embodied Energy, MJ/kg | 18 | |
19 |
Embodied Water, L/kg | 46 | |
47 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 78 | |
99 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 190 | |
260 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 17 | |
19 |
Strength to Weight: Bending, points | 17 | |
19 |
Thermal Diffusivity, mm2/s | 14 | |
13 |
Thermal Shock Resistance, points | 15 | |
16 |
Alloy Composition
Boron (B), % | 0 | |
0.00050 to 0.0030 |
Carbon (C), % | 0 to 0.3 | |
0.44 to 0.49 |
Chromium (Cr), % | 0 | |
0.2 to 0.35 |
Iron (Fe), % | 98.1 to 99.61 | |
97.7 to 98.5 |
Manganese (Mn), % | 0.29 to 1.1 | |
0.75 to 1.0 |
Phosphorus (P), % | 0 to 0.035 | |
0 to 0.035 |
Silicon (Si), % | 0.1 to 0.5 | |
0.15 to 0.35 |
Sulfur (S), % | 0 to 0.035 | |
0 to 0.040 |